Changing the dial colour of a Lady DayJust?

[Rolax2413]

A lady friend of mine wants to change the dial colour of her DayJust from black to white for her easy reading of the time. You can guess her age,

I took a look of her watch; it was a M-series, if I remember correctly.

Does the Singapore Rolex Service Centre change the dial of a Lady DayJust? How much?

Thanks in advance!